KR100695363B1 - Absorbent article - Google Patents

Abstract

The present invention relates to an absorbent article. The invention relates in particular to an absorbent article comprising cellulose fibers 14 which are at least partly in granular form. Furthermore, the present invention also relates to the use of cellulose fibers 14, which are at least partly in the form of granules as material for absorbent articles.

Absorbents, Sanitary Napkins, Incontinences, Diapers, Cellulose, Granules

Description

Absorbent article {ABSORBENT ARTICLES}

The present invention relates to an absorbent article.

Disposable absorbent articles have been known for many years. These are used, for example, as sanitary napkins, panty liners, diapers or incontinence pads. This disposable absorbent article has in common that it has a layer for holding liquid. The liquid-storage layer can be made of cellulose, for example.

One disadvantage of known disposable absorbent articles has been found to be the fact that conventional pure cellulose layers have limited capacity as liquid-retaining materials. In addition, the retention capacity of the cellulosic material after exposure to the fluid is not so great, especially under pressure. Finally, the modified cellulosic material remains shaped as it is deformed, which is often unpleasant to the person wearing the absorbent article.

There is also a known disposable absorbent article having a superabsorbent as a liquid-storage layer. Superabsorbents can absorb a liquid weight several times greater than its dry weight and retain to some extent even when pressure is applied. Superabsorbents are disclosed, for example, in EP-A-0 339461.

One problem with using superabsorbents in the liquid-retaining layer of an absorbent article is that the superabsorbents increase in volume when they absorb liquid, ie they "bulge". As a result, the absorbent article becomes thicker, reducing the wearer's comfort. Each component of the superabsorbent also tends to stick together when exposed to the liquid, greatly reducing the theoretical liquid absorption (so-called "gel blocking"). Gel blocking allows the dispersion of liquids that penetrate into the absorbent article to be limited. When exposed to large amounts of liquid, although theoretically sufficient storage capacity must remain, this prevents the liquid from being fully absorbed by the absorbent article anymore, in which case the wearer of the absorbent article may feel moist or dirty on the skin. Can also have a risk of soiling the wearer's clothing. Finally, the gel blocking effect can permanently deform the absorbent article, further reducing the comfort of the absorbent article wearer.

It would also be desirable in the art to manufacture absorbent articles from materials that do not pose a health risk to the user of the absorbent article. Moreover, such materials should preferably be produced biologically and particularly preferably biodegradable, since the final disposal of disposable items is still an environmental problem.

It is therefore an object of the present invention to provide an absorbent article without the disadvantages of the known products. This object is achieved by the present invention with an absorbent article as defined in the independent claim 1. Further advantageous embodiments, details and aspects of the invention are described in the independent claims, the description of the invention, the drawings.

Another object of the present invention is to provide a material which, by use, has a positive effect on the flowability and retention of the absorbent article. The use of such materials is claimed in the independent claim 52.

A further object of the present invention is to provide an absorbent article for the field of feminine hygiene products which is worn in a particularly distinct manner. This object is achieved by the independent claim 55. Its preferred development is explained in more detail in each dependent claim.

Before describing the present invention in detail, some terms must first be defined to aid in understanding the purpose of the present invention:

Absorbent article : The term "absorbent article" as used in this patent application is understood to mean an article suitable for absorption, particularly absorption of body fluids. This includes in particular the absorption of urine, blood and fecal matter. The absorbent article according to the present invention is often a disposable article, but it does not necessarily need to be a disposable article. Examples of absorbent articles according to the invention include sanitary pads, in particular sanitary napkins and panty liners, diapers, incontinence pads, bandages and similar articles.

Liquid-Permeable Cover Layer : This is understood to mean the "best" layer of the absorbent article which, when in use, faces the body and is in contact with the wearer's body. This cover layer is essentially liquid permeable in the sense that body fluids such as blood or urine can penetrate through the cover layer to other parts of the absorbent article.

Liquid-impermeable backing layer : This is understood to mean the "bottom" layer of an absorbent article disposed away from the wearer's body during use. Body fluid that penetrates into the absorbent article and reaches this layer is essentially liquid-impermeable in the sense that it can no longer spread in a direction away from the wearer's body. Therefore, the clothing is prevented from being soiled when the absorbent article is worn inside. In many cases the backing layer is a layer facing away from the wearer's body and located farthest from the body, but there may also be other layers, such as adhesive layers and nonwovens, further away from the wearer's body.

Absorbent : The absorbent according to the invention comprises any absorbent material made in any desired form. The absorbent body may be disposed centrally in the absorbent article or may cover the entire length and width of the absorbent article. Other arrangements are also included. In the conventional case, the absorbent body is arranged between the liquid-permeable cover layer and the liquid-impermeable backing layer but need not be so.

Fine Cellulose Fibers : Cellulose fibers are fibers obtained from cellulose by methods familiar to those skilled in the art. Such cellulose fibers are considered "fine" as long as they conform to the diameter and length or thickness specifications given in the appended claims and specification.

Screened : Granulated cellulose fibers are screened by moving the particles obtained in the process and checking their suitability.

Free fluidity : It is understood that if a material is free flowing not only upon drying but also after exposure to a liquid, it is free.

Superabsorbent : This term is a water-swellable, essentially water-insoluble material capable of absorbing at least about 10 times the magnetic weight, preferably about 20 times the magnetic weight, in particular about 50 times the magnetic weight, in water. Means. Superabsorbents can be formed from organic materials, including natural materials such as agar, pectin and guar gum, as well as synthetic materials such as synthetic hydrogel polymers. Synthetic hydrogel polymers are, for example, carboxymethyl cellulose, alkali metal salts of polyacrylic acid, polyacrylamide, polyvinyl alcohol, ethylene-maleic anhydride copolymers, polyvinyl ethers, hydroxypropyl cellulose, polyvinyl morpholi Paddy, polymers and copolymers of vinylsulfonic acid, polyacrylates, polyacrylamides, polyvinylpyridine and the like. Other suitable polymers include hydrolyzed acrylonitrile-grafted starch, acrylic acid-grafted starch and isobutylene-maleic anhydride copolymers and mixtures thereof. The hydrogel polymer is preferably slightly crosslinked in order to make the material essentially water-insoluble. Crosslinking can be induced, for example, by radiation or by covalent, ionic, van der Waals or hydrogen bonds. Suitable materials are various vendors, such as Dow Chemical Company, Hoechst Celaniskopf. Hoechst Celanese Corp., BASF and Stokehausen Inc. Available from Stockhausen Inc. Superabsorbents can be in the form of particles, beads, flocks, fibers, rods, films or many other geometric shapes. If in the form of particles or beads, it will be desirable for the particles or beads to have a maximum cross-sectional dimension of from about 20 micrometers to about 2000 micrometers, preferably from about 60 micrometers to about 1000 micrometers.

Water Retention Capacity : The water retention capacity according to the invention describes the properties of the material according to the method described on pages 31 to 32 of this patent application.

All other technical terms used in this patent application should be understood according to the definitions of Roppm Chemielexicon, Thieme-Verlag, 9 ^th edition, 1995, unless otherwise defined herein.

According to a first aspect, the present invention relates to an absorbent article comprising cellulose fibers, at least partly in the form of granules. Absorbent articles comprising cellulosic fibers, at least partly in the form of granules, have the advantage of optimally adapting the absorbent article to the wearer's individual body shape, which greatly increases comfort when worn. This advantage can be achieved because the material comprising cellulose fibers, at least partly in the form of granules, is free-flowing and remains free-flowing even after exposure to the fluid.

This also results in the functionality of the article being maintained even in the deformed state.

Cellulose fibers, at least partly in the form of granules, can be obtained from wood and / or other plant fibers. Cellulose fibers at least partially in the form of granules and obtained from wood are preferred. Other suitable plant fibers include, for example, apple fibers, orange fibers, and wheat fibers. Those skilled in the art will be familiar with the process of producing cellulose fibers from wood and / or other plant fibers, at least in part in the form of granules.

According to a preferred embodiment of the invention, the absorbent article also comprises at least the following components:

A liquid-permeable cover layer facing the wearer's body when using the absorbent article,

A liquid-impermeable backing layer facing away from the wearer's body when using the absorbent article,

An absorbent body disposed between the liquid-permeable cover layer and the liquid-impermeable backing layer (at least partially in the form of granules of cellulose fibers disposed in the absorbent body).

In addition, wings or other side projections may also be provided to simplify attachment to the garment in use of the absorbent article.

It is particularly preferred that the absorbent body is disposed centrally at a distance in each direction from the side edges of the absorbent article in the absorbent article.

A particular embodiment of an absorbent article according to the first aspect of the present invention is an embodiment where the liquid-permeable top cover layer has a folded portion that extends in the longitudinal direction. This folded portion is designed such that the liquid-permeable layer partially covers the absorbent body even when the absorbent article is worn away from the wearer's body. Firstly, this is achieved by the fact that the absorbent body is glued only at the narrow central part rather than at its entire "bottom". Secondly, the two folded portions are inserted into the liquid-permeable layer and also surround the absorbent in the longitudinal direction of the absorbent article and at least partially surround it. This design, despite being sandwiched between the liquid-impermeable backing layer and the liquid-permeable cover layer, results in the absorbent still remaining flexible and very well adapted to the anatomical shape of the wearer's body.

If the liquid-permeable layer and the liquid-impermeable layer are adhered to each other at their corner portions to form a tightly sealed inner space, the absorbers can be formed by loosely and movably placed materials with respect to each other, which material Even after contact with the fluid, it remains free-flowing, allowing the material to move freely in the entire interior space.

According to another aspect, the invention provides an absorbent body comprising a liquid-impermeable layer facing away from the wearer's body during use of the absorbent article, and an absorbent material that remains in a free-flowing state even after being wrapped in and in contact with the liquid-permeable coating. It relates to an absorbent article having an absorbent, wherein the absorbent is bonded thereto in the central portion of the liquid-impermeable layer. The absorber and liquid-impermeable layer need not be in direct contact here. If at least one other layer is disposed above the liquid-impermeable layer, the absorber is attached to the top side of the top layer of these layers.

It is preferable that the absorbent material in the absorbent body maintain free flow when worn and even after contact with the liquid. It is particularly desirable for the material to maintain free flow up to a liquid load of at least 10 ml / g. This makes it possible for the absorbent article to conform to the body of an individual wearer during various movements and types of stress processes. That is, the absorbent body "flows" and, when there is a transverse load or transverse pressure by the wearer's thigh, may be slightly depressed by moving the absorbent material to a less pressured area. When the load or pressure is removed, the transferred particles can return to the starting position where they can absorb the liquid again. Particles, on the other hand, can also be rearranged by this movement, so that absorption and storage capacities that have not been used previously can be used in this way. In this case, when referring to the "absorbent", it will be understood that this is called a "reservoir".

The granules according to the present invention have a structure like cotton balls. Thus, they have a specific void volume, ie, a hollow volume that exhibits a large surface area. This particular design of the granules exhibits better mobility and free flow properties, but also ensures voids for collecting and storing fluids, especially blood cells.

The absorbent article according to the present invention has the following advantages because of the absorbent material comprising the absorbent material according to the invention which maintains free flow even after contact with the liquid and at the same time also functions as a storage layer.

Fast liquid absorption (good penetration into free flowing materials and good wettability of such materials),

-Good liquid retention (even holding liquids under pressure load),

Good absorption capacity (substantially without volume increase),

-Prevents lump formation on contact with liquids,

-Optimal adaptability to the body of the individual wearer,

-Excellent softness of the goods, combined with excellent comfort when worn

-Very excellent liquid transport and excellent liquid dispersion,

No depression or "Bottoming out" as is known to occur in other cellulose absorbers,

-Good absorbent for the body,

-Biologically productive and usable absorbent materials and

Optimal use of the absorbent material available.

In particular, with the absorbent article according to the additional aspect of the present invention mentioned above, when the absorbent article is worn, the coated absorbent is substantially "exposed", ie the wear-resistant layer by means of a liquid-permeable layer covering the entire product. Because it extends toward the so-called wearer's body vertically, ie three-dimensionally, without being separated from the body of the wearer, optimal adaptation is made to the anatomical features of the wearer's body. Liquid secreted from the wearer's body may be absorbed directly into the absorber at the point of outflow from the wearer's body and then moved to or stored there.

The bond between the liquid-impermeable backing layer and the absorbent body surrounded by the liquid-permeable layer can be made in a suitable manner. For example, bonds produced by adhesives have been found to be beneficial for the mechanical production of absorbent articles of the present invention. However, the backing layer and the absorbent body may be firmly bonded to each other, for example by sewing, in which case it is important that the liquid-impermeable backing layer is not damaged enough to allow the liquid to pass therethrough.

It has also been found that it is advantageous for the absorbent article according to the invention to have another layer of soft material which can act as a secondary reservoir towards the liquid-impermeable layer facing the wearer's body. This additional layer further enhances the wearer's comfort when wearing the absorbent article. This additional layer may also store liquid not absorbed by the main absorber, but of course the absolute storage capacity of the additional layer is much less than that of the actual absorber. Suitable materials for the additional layer include coforms (polypropylene-cellulose mixtures), airlaid materials (synthetic fiber-cellulose mixtures) and nonwovens such as carding nonwovens and spunbond nonwovens.

According to another aspect of the present invention, an absorbent that maintains free flow even after contact with liquid is embedded in a matrix of fibrous material. The material can be homogeneously incorporated into the fiber matrix such that the components of the absorbent material that maintain free flow even after contact with the liquid are evenly distributed and included therein. Alternatively, however, the absorbent body may have a layered structure in which an absorbent that maintains free flow even after contact with a liquid is sandwiched between two or more layers of fiber material. As a result, with the sandwich structure described above, additional absorbent material which still maintains free flow after contact with the liquid may be incorporated into the fiber layer. Particularly suitable materials for use as the fiber material for the abovementioned purposes include cellulose or mixtures of cellulose and propylene, ie so-called coform materials. Since the fibers have a specific absorbency and can directionally deliver liquids, the use of such materials achieves a more optimal liquid distribution in the absorbent article according to the invention. The ratio of absorbent to fibrous material which maintains free flow even after contact with the liquid is preferably from 1 to 25% by weight to 99 to 75% by weight, in particular from 10 to 15% by weight to 90 to 85% by weight.

According to another aspect of the present invention, the absorbent body may include one or more skin protection materials in the absorbent bond, in addition to the absorbent material which maintains free flow even after contact with the liquid. This mainly refers to substances which protect the skin of the wearer of the absorbent article according to the invention. Suitable materials include, for example, extracts of aloe vera, calendula and chamomile.

Particularly beneficial is the encapsulation of skin protective substances in microcapsules. The microcapsules may be mixed with absorbents that retain free flow even after contact with the liquid. The sealing of the microcapsules should be designed to explode upon wearing the absorbent article according to the invention, thus releasing the skin protective material or substances. The microcapsules may burst, for example, under pressure, heat and / or friction. Microencapsulation of materials has long been known for its use, for example in the printing industry.

The cellulose fibers in at least partially granular form according to the invention may be in the form of complete granules, essentially in granular form or in a mixture of fibers and granules. Both granules and mixtures are free flowing, which is related to the advantages described above.

According to a preferred embodiment of the invention, the particles in the granules have a diameter of 50 to 3000 μm. Particular preference is given to having a diameter of 400 μm.

Preference is also given to an average powder density of the granules (measured according to DIN 53,468) 30 to 600 g / l. Particular preference is given here to an average powder density of 100 to 300 g / l ± 15%.

For example, the granules are manufactured by J. Rettenmeyer and Jones, Germany. Rettenmaier and Sons Inc.] granules of LC 200, a cellulose fiber product.

If the fibers are present in the cellulose fibers of the invention, at least partly in the form of granules, they will preferably have an average fiber length of 100 to 600 μm. Especially preferred is an average fiber length of 300 μm. According to a preferred embodiment of the present invention, the average fiber thickness of this fiber is 10-50 μm. Especially preferred is an average fiber thickness of 20 μm.

According to a preferred embodiment of the present invention, fibers with the above specified characteristics are used to produce granules.

When the cellulose fiber in at least partly granular form according to the invention is a mixture of fibers and granules, this is a "true" mixture. That is, the cellulose fibers and the resulting granules are brought into contact and will be mixed in a manner familiar to those skilled in the art. On the other hand, the mixture may consist of particles in the form of granules, but the fibers are present on the surface of the individual granule particles. Such “mixtures” can be prepared by immediately preventing or granulating the fine cellulose fibers so that the individual uncoiled or incompletely granulated fibers protrude from the granules.

The mixture of granules and fibers preferably comprises 10% to 80% by weight of fibers. It is particularly preferred that the mixture contains 60 to 70% by weight granules and 30 to 40% by weight fibers.

In addition to cellulose fibers, which are at least partly in granule form, the absorbent articles of the absorbent article may also contain other materials. The composition may be chosen such that one substance assumes the function mentioned above or is distributed among several substances. Such materials may include superabsorbents, superabsorbents in particulate form, superabsorbent fibers, zeolites, cellulose fibers, synthetic staple beads or viscose staple fibers of different lengths, polystyrene, and the like.

With regard to the properties of the cellulose fibers, which are at least partly in the form of granules, it should also be pointed out that these particles have a structure suitable for suppressing odors. If the cellulose fiber according to the invention, at least partly in granule form, is used as a material for absorbing liquid or for storing liquid, another advantage of the invention is, for example, for the binding odors of the zeolite, It is possible to omit use. The cellulose fibers according to the invention, which are at least partly in granular form, also have advantages in terms of the amount of absorbent material used. Compared to the polyacrylates used as superabsorbents, the cost of the cellulose fibers according to the invention, at least partly in the form of granules, is on the order of approximately the same as the cost of conventional cellulose.

As noted above, the present invention also relates to the prevention of unpleasant odors in the use of absorbent articles according to the invention. According to the present invention, it is contemplated that bactericidal, fungicidal and / or virucidal materials may be introduced by immobilization or absorbent binding in or on an absorbent which retains free flow even after binding with the liquid. If the cellulose fibers of the invention, at least partly in granule form, are used as absorbents according to the invention, they will have the structure described above. That is, the material will have a large inner surface area in addition to its outer surface. It is important that the bactericidal, fungicidal and virucidal substances are immobilized in the absorbent material. Because if these substances are released they will cause skin irritation to the wearer of the absorbent article. Mainly the metabolites of microorganisms are the source of the unpleasant odor that occurs when using absorbent articles; That is, odors can be effectively suppressed or prevented by inhibiting the growth and / or replication of microorganisms or killing them. With such materials it is possible to inhibit and inhibit the growth of microorganisms and, in addition to effectively eliminating odors in cellulose fibers, at least partly in the form of granules, according to the invention. It can also be prevented by further use, which provides the wearer of the absorbent article according to the invention with additional safety from side effects.

Suitable bactericidal substances include, for example, chlorinated levulinic acid and alkyldimethylbenzylammonium halides.

In addition to absorbers containing components that maintain free flow even after contact with the liquid, the absorbers may also have other regions. In such a case, the absorbent portion comprising the free flow material is preferably designed with one or more core pieces whose length l is smaller than the length L of the absorbent article and whose width b is smaller than the length B of the absorbent article.

Numerous different embodiments can be envisioned herein, for example, adhesive strips can be used to fix the absorber to the underlayer to attach strip by strip. In general terms, the region or portion of the region to which the absorber is bonded to the lower layer is smaller than the region portion indicated by l × b. The length λ of the absorber / underlayer bond is less than or equal to the length l, and the width β of the absorber / underlayer bond is less than or equal to the width b.

The absorbent body may consist of one compartment or may be divided into several subcompartments, which may be completely separate from each other or communicate with each other. In this way, when pressure is applied to the compartments, the particles can move to adjacent compartments.

If the absorbent design has three compartments, for example, the central compartment may be, for example, cellulose fibers according to the invention in at least partly granular form, or cellulose fibers and other additives according to the invention in at least partly granular form. (E.g., superabsorbents). Appropriate compartment divisions and arrangements are described, for example, in WO 98/43684.

Superabsorbents or other additives may be added at any location in the absorbent material in any structure. It is preferable that the super absorbent material is polyacrylate. The superabsorbent and at least partly in the form of granules and optionally in the form of fibrous materials may be in the form of a mixture or arranged in layers.

According to a preferred embodiment of the present invention, the fiber material is disposed between the superabsorbent layer and the layer of cellulose fibers in at least partly granular form, wherein the superabsorbent layer is facing away from the wearer's body ( It is particularly preferred to be disposed on the side of the lower) fiber layer, and it is particularly preferred that the cellulose fiber layer, at least partly in the form of granules, is disposed on the side of the fiber layer facing (upper) the wearer's body.

According to an alternative embodiment of the invention, the absorbent material and / or the cellulose fiber and / or superabsorbent material in at least partly granular form according to the invention are in the form of a mixture.

In order to improve the overall efficiency of the cellulose fibers, which are at least partly in the form of granules, it may be advantageous to coat the fibers with an agent that delays absorption of liquids. Such agents that delay absorption of liquids are known in the art and include, for example, dextrins. Alternatively, the cellulose fibers in at least partially granular form may be hydrophobized using suitable formulations known in the art such as Wacker-Silicone Finish.

The water retention capacity of the cellulose fiber in at least partly granular form is advantageously at least 6 g per g of the cellulose fiber in at least partly granular form. Particularly advantageous is 8-16 g per g of said cellulose fiber, at least partly in granule form.

The cellulose fiber according to the invention, at least partly in granule form, can be used as the material of the absorbent article. Because of the advantages described above, absorbent articles comprising the cellulose fibers according to the invention, which are at least partly in the form of granules, have several advantages.

The above mentioned advantages in particular include improved flowability (ie the free flowing properties of the absorbent material of the absorbent article as described above). If it is a special purpose to improve the fluidity of the absorbent article, the cellulose fibers according to the invention, which are at least partly in the form of granules, are preferably used "in essence" in granular form. As used herein, “essentially” means that at least 90% of the cellulose fibers in at least partially granular form are in granular form.

If it is desired to improve rewetting in absorbent articles, in particular rewet under pressure, it is possible to achieve cellulose fibers in essentially fibrous form, at least partly in granular form. "Essentially" here means 30-50% by weight of fibers.

When using mixtures of cellulose fibers according to the invention, for example in the form of superabsorbents and at least partly in the form of granules, it is important to ensure that these mixtures do not separate, in which case the potentially absorbent material or storage capacity All of the materials present are not available. That is because so-called dead zones can occur.

Accordingly, the present invention provides an absorbent article that suits the curve of the wearer's body. These products are also characterized in that they do not increase in volume when appropriate absorbents come into contact with the liquid. That is, they do not swell. Finally, the absorbent article according to the present invention can suitably absorb liquid even in a deformed state.

The absorbent article according to the invention also suitably fits the curve of the wearer's body. These products thus have the advantage of being able to wear very close to the body (fitting for anatomical form), whereby the liquid is absorbed as soon as it is discharged from the body so that the wearer does not feel wet on the skin. The feeling of dryness on the wearer's skin is achieved by the fact that in the absorbent article according to the invention the absorbent material is arranged in the center. Finally, the design of the absorbent article according to the invention can also make the end of the sanitary napkin extremely thin, for example, so that such products can be worn very discretely.

It is particularly advantageous to obtain a cellulosic fibrous material according to the invention, which is at least partly in granule form, from a readily accessible and inexpensive biological material. These substances are also completely safe in terms of health. In addition, they have the advantage of biodegradability, which is a very important property, especially for disposable products.

In addition to the above-described element (primary storage material), which is referred to as an absorber and also functions as a liquid storage layer, the absorbent article according to the invention may also have an additional storage layer (so-called secondary storage material). This additional storage layer is preferably designed as a sheet between the absorber and the liquid-impermeable layer facing away from the wearer's body. This material forming an additional storage layer may have an absorption effect to better disperse the liquid. This additional storage layer is for emergencies for any reason beyond the capacity limit of the absorbent body (primary storage layer). Suitable materials as further storage layers (secondary storage layers) include, for example, coform materials, conventional cellulose, conventional cellulose fiber mixtures (air-laid), nonwovens or tissue cotton.

Absorbent articles according to the invention with the novel absorbents can be used, for example, in the field of hygiene, for example feminine hygiene sanitary napkins, in particular very thin sanitary napkins or panty liners. Additionally, the absorbent article according to the present invention may be designed as a disposable infant diaper or child training pant or incontinence liner or band in the medical field.

If the absorbent article has a liquid-permeable cover layer facing the wearer's body in use, an additional cover layer having a central opening (so-called porthole) disposed on the absorber may be disposed below the liquid-permeable layer. have. Such absorbent articles are for example disclosed in German Patent Application No. 196404517. This porthole design is particularly well suited for feminine hygiene products.

The absorbent article mentioned in the German patent application may have the following structure. A liquid-impermeable layer is provided on the side of the absorbent article facing away from the wearer's body during use. The primary storage layer is disposed on top of this liquid impermeable layer. The secondary storage layer is disposed thereon. There is a complement layer over the secondary storage layer and a cover layer with a central opening above the supplement layer. Corresponding cover layers with openings may also be present in the absorbent article according to the invention. Finally, absorbent articles according to the invention may also include an upper liquid-permeable layer facing the wearer's body during use. The secondary storage layer may have at least one compressed region.

For example, conventional cellulose is a suitable material for the secondary storage layer. A product in which the secondary storage layer is locally compressed may be produced, for example, by forming an embossing groove in the storage layer. The storage material under the embossed grooves is then compacted and the grooves contribute to the directional dispersion of the liquid in the storage layer and the absorbent article.

The cover layer with a central opening is made, for example, of a mixture of cellulose and polymerized alkenes. Suitable mixtures preferably comprise at least 50% by weight of polymerized alkenes. Very good results are obtained when the polymerized alkene is 50-80% by weight, in particular 60% by weight. The cover layer may be made of two layers, wherein a first layer, which is a mixture of cellulose and polymerized alkenes, is applied to a second carrier layer of polymerized alkenes, wherein the first layer is a mixture of cellulose and polymerized alkenes This use is connected to the liquid-impermeable layer facing the wearer's body and the second carrier layer is connected to the complement layer. Preferred polymerized alkenes are polyethylene, polypropylene and mixtures thereof. The cover layer may also comprise a pigment, such as titanium dioxide. The material of the complement layer is advantageously composed of nonwovens. Adducts may include polymerized alkenes and / or bicomponent fibers. The complement layer may be coated with a surfactant material which may include, for example, silicon (silicone) on the surface facing the storage layer. The first storage layer may be composed of, for example, a UCTAD material (UCTAD = uncreped through air-dried material), tissue cotton or polymerizable alkene. The first storage layer is advantageously configured such that its corner regions are folded in and overlap each other.

Both the liquid-impermeable layer and the liquid-permeable layer can be prepared from polymerized alkenes such as polyethylene, polypropylene and mixtures thereof. At least one adhesive element and / or adhesive layer may be applied to the liquid-impermeable layer in order to adhere the absorbent article according to the invention to the garment. In addition, the absorbent article according to the invention may have wings arranged on the sides.

The invention will be explained in more detail based on the following figures with reference marks.

1: Top view of sanitary napkin.

2: A cross section along line A-A of the sanitary napkin according to claim 1.

3A: cross section through an absorbent body comprising a fiber material, a superabsorbent material and cellulose fibers according to the invention in at least partly granular form.

3B: Cross section through an absorbent body comprising a fiber material arranged in layers, a superabsorbent material and a cellulose fiber according to the invention in at least partly granular form.

4A: Dark field micrograph (magnification 60 ×) of cellulose fibers in fiber form.

4B: Light field micrograph (magnification 60 ×) of the fiber according to FIG. 4A.

FIG. 5A: Dark field micrograph of cellulose fibers in at least partially granular form. Granule form visible (magnification 14 ×).

FIG. 5B: Dark field micrograph of cellulose fibers in at least partially granular form according to FIG. 5A. Granule form visible (magnification 14 ×).

6A: Dark field micrograph of a mixture of granular cellulose fibers and fibrous cellulose fibers present at least partially in the form of granules according to the present invention. Ratio of granules to fibers = 2: 1 (mass ratio) (magnification 14 ×).

FIG. 6B: Light field micrograph (magnification 14 ×) of the mixture shown in FIG. 6A.

FIG. 6C: Dark field micrograph (magnification 50 ×) of the mixture shown in FIG. 6A.

FIG. 6D: Light field micrograph (magnification 50 ×) of the mixture shown in FIG. 6A.

7A: Dark field micrograph of cellulose fiber according to the invention in at least partly granular form. Appears as granules with fibers on the surface (magnification 14 ×).

FIG. 7B: Light field micrographs (magnification 14 ×) of cellulose fibers according to the invention, present in at least partially granular form, as shown in FIG. 7A.

FIG. 7C: Dark field micrograph (magnification 60 ×) of cellulose fibers present in at least partially granular form, as shown in FIG. 7A.

FIG. 7D: Light field micrographs (magnification 60 ×) of cellulose fibers, at least partially present in granular form, as shown in FIG. 7A.

8: Comparative diagram of the elevation height due to blood for various cellulose fibers according to the invention, at least partly in granule form (after 1 minute, 5 minutes, 10 minutes, 20 minutes).

In the figures,

1, 1a = granule form

2, 2a = fiber form

3, 3a = granule form with fibers present on the surface, ratio of granules to fibers = 2: 1 (weight ratio)

9: Liquid absorption amount measuring device

10: Dynamic rewet amount measuring device

Figures 11-23: Additional embodiments of interlabial products (usually indicated in perspective, with the front part separated to show a vertical cross sectional view).

While the absorbent articles according to the present invention are shown in detail below with a sanitary napkin, it is clear that the present invention is not limited to sanitary napkins and encompasses all absorbent hygiene articles.

1 and 2 show a plan view and a cross-sectional view of a sanitary napkin 2 having a front region, a middle region and a terminal region according to the present invention. In use the liquid-permeable layer 4 of the sanitary napkin 2 facing towards the wearer's body and the liquid-impermeable layer 10 facing away from the wearer's body bind to each other at the distal region 3 of the sanitary napkin. The central member 12 of the absorbent body 6 extends centrally in the longitudinal direction of the sanitary napkin 2, whereby the central region of the liquid-permeable layer 4 is raised relative to the front region and the terminal region. The central member 12 of the absorbent body of the product according to the invention is arranged in the central region of the product and extends in the longitudinal direction of the product. The central member 12 comprises a (liquid-permeable) sheath 24 made of nonwoven. The material which remains free-flowing even after contact with the liquid is surrounded by a sheath, and in the present case the free-flowing material is for example at least partially in the form of granules 14 (particle size 100-1000 μm with individual particles Is a cellulose fiber according to the invention which is predominantly egg-shaped).

The length l of the central member 12 is less than or equal to the length L of the absorbent article, and the width b of the central member 12 is less than or equal to the width B of the absorbent article.

In the embodiment disclosed in FIG. 2, the contact 24 is almost completely filled with a material that does not swell even when in contact with the liquid, causing no problems, and thus there is no danger of the coating becoming too tight.

The liquid-permeable layer 4 and the liquid-impermeable layer 10 (panty shield) are joined in the corner region 3.

The central member 12 of the absorbent body designed to be elliptical also has a second storage layer 8 and cellulose underneath in the embodiment of the absorbent article according to the invention disclosed in FIG. 2. This material comprising cellulose first serves as a reserve reservoir (second reservoir) when it exceeds the storage capacity of the center member filled with a material that is comfortable to the wearer and which remains free flowing even after contact with the liquid. However, the capacity of such reserve reservoirs does not usually need to be required, which until now is that most sanitary napkins are exposed to less than 5 ml of liquid and the fact that the storage capacity of the central member is sufficient for the amount in any case. Because it turns out.

When the absorbent article 2 according to the invention comes into contact with blood, the blood penetrates through the liquid-permeable layer 4 and through the coating material into the material 20 having the central member 12. Penetrate

In the corner region, the liquid-permeable layer 4 and the liquid-impermeable layer 10 (panty shield) join. In the case of the present invention, the adhesives are applied by bonding to the layers. However, it is also possible to combine the layers in other ways, for example by ultrasonic welding or thermal bonding. As in the corner region of the article, the two layers can be attached together with an adhesive in the corner region of the sheath.

The absorbent material 22 can be present in the second storage layer and can comprise the cellulose fibers according to the invention in the form of at least partially granules, such as the absorbent material 20.

The filling of the absorbent body with the cellulose fibers according to the invention, at least partly in the form of granules, can be achieved by the method disclosed in PCT application WO 98/43684.

3A shows an absorbent body 6 filled with superabsorbent material 16 (o), fibrous material 18 (+) and cellulose fibers 14 (*) according to the invention in at least partly granular form. According to this embodiment, it is in the form of a true mixture.

An alternative embodiment is shown in FIG. 3B, which according to the invention has a cellulose fiber according to the invention which is at least partly in the form of granules on the side of the absorbent body 6 facing the wearer's body in use of the absorbent article 2. Layer 14 is provided, while layer 16 of superabsorbent material is provided on the side of absorber 6 facing away from the wearer's body in use. The fibrous layer 18 is disposed between these two layers. Other layer arrangements and arrangements are also possible.

4A and 4B show the dark and bright spots, respectively, of cellulose fibers according to the invention in the form of fibers. Fine cellulose fibers can be clearly seen. In particular when the retention capacity of the absorbent article is to be improved, the fibers disclosed in FIG. 4 can be improved by mixing with the granules according to the invention.

5A and 5B thus show the granules according to the invention in different magnifications. 5B clearly shows the spherical or oval shape of the granular particles, in particular small cotton swabs or balls. On this surface, negligible small fiber residues protruding out of the granules are visible. The granules disclosed in FIG. 5 are particularly suitable when trying to improve the free flow or flow characteristics of the absorbent material of the absorbent article.

6A-6D show dark field micrographs and light field micrographs of a mixture of cellulose fibers according to the invention, which are at least partly in granule form, appearing in granular form and fiber form at various magnifications. The ratio of granular to fibrous is 2: 1 (weight / weight).

According to these figures the fiber form and the granule form are clearly different. They also show that two types of good mixture forms can be achieved. Particular preference is given to a granular to fibrous mixing ratio of 2: 1. Another suitable mixing ratio of granular to fibrous is 60-70% by weight of the granule form versus 30-40% by weight of the fiber form. The ratio of granule form to fiber form depends, of course, on the effect to be achieved with the cellulose fiber according to the invention, which is at least partly in granule form. Particularly if the free flow is to be improved, the percentage of the granular form should be high, whereas if it is desired to improve the rewetting properties, the percentage of the fiber form should be high.

Finally, Figures 7A-7D show a particularly preferred embodiment of the cellulose fiber according to the invention, which is at least partly in the form of granules. Here again, the cellulosic fibers according to the invention, at least partly in the form of granules, are shown at various magnifications in dark field micrographs and light field micrographs, wherein the fibers are present on the surface of the granular particles. These fibers are much longer than the short fiber residues seen on the granular particles of FIG. 5.

Cellulose fibers, as disclosed in FIGS. 7A-7D, according to the invention in at least partly granular form, are preferably produced by a process in which the following steps are carried out:

Fine cellulose fiber manufacturing step;

Winding the fibers to form granules or agglomerating the fibers in a humid atmosphere to form granules, wherein the winding and / or agglomeration processes form granules with incompletely wound fibers on their surface Is promptly suspended).

FIG. 8 shows various elevation heights of blood (since it corresponds to all the essential properties of using sheep's blood) in the cellulose fibers according to the invention, which are at least partly in the form of granules. Good elevation heights were shown for all of the embodiments presented herein. From this experiment it can also be seen that the granular material has a clearly good elevation height, in particular in comparison with the fiber material alone or in a mixture after 5 minutes.

11-23 further illustrate embodiments of the present invention in the form of feminine hygiene articles (hereinafter abbreviated “interlabial articles”) that can be placed and used between the labia.

11 shows an enlarged view of the interlabial article 19 in perspective and cut, with the liquid-permeable cover layer 19a close to the body side and the liquid-impermeable layer 19b / 19d on the back facing away from the body side. ) And they are joined together in the corner region 19c. In this case, 19d is a liquid-impermeable coating that does not touch the mucosa area of the wearer. The cavity H is at least partially filled with the granules or cellulose fibers 14, 16, 18, and the like of the present invention.

12 shows an enlarged cross-sectional design diagram of the interlabial article 19 in use. That is, it is an arrangement of the state inserted in the labia part 41a and the vestibule 41b, and is very comfortable to wear. In this case, the liquid-impermeable layer 19d does not touch the mucosa area of the wearer.

Fig. 13 shows a cross-sectional view in perspective form and a detailed enlarged cross-sectional view of an additional interlabial article 2a, which consists of two layers 4a, 4a ', which are two layers ( 4a), 4a 'comprises a cavity H formed therein, the cavity H being at least partially filled with granules or cellulose fibers 14, 16, 18, wherein the two layers of layers ( 4a), 4a 'show a mushroom-like cross section, with the distal distal end facing away from the body being formed, for example, as a U-junction into the joint 23, where a handle portion is formed. At the distal portion facing away from the body, a liquid-impermeable coating and / or lacquer coating 10a is applied to such an extent that mucous membranes such as the labia portion 41a are not invaded by it.

Fig. 14 shows an interlabial article 2b having a one-walled outer layer 4a, which is formed into a mushroom-shaped body similar to that described above, thereby forming a cavity H. The cavity H is at least partially filled with granules or cellulose fibers 14, 16, 18, and the like. The distal end of layer 4a is welded distally or glued to form a junction 23 in a manner facing away from the body, thereby forming a handle. The layer 10a imparting impermeability to the liquid is applied to the lower region without reaching the wearer's mucosa.

In FIG. 15, the use of the interlabial article 2b according to FIG. 14 is shown. The fitting into the labia area 41a and the vaginal vestibule is the fitting in the whole area, and is thus very comfortable to wear. The liquid-impermeable coating 10a is in this case only retained in the distal region facing away from the body side. Use the handle in (23) to remove saturated absorber.

The embodiment of FIG. 16 shows an interlabial article 2d, whose coating is formed by one upper member 25 and two lower members 26 and 27. (28), (29) and (30) are joints or seams. The one filled with granules is represented by (14) and the liquid-impermeable coating is represented by (10a).

The embodiment of FIG. 17 corresponds to the product of FIG. 16, except that the sheath of this product 2e is formed of two members 25 and 31. The lower member 31 is offset or folded to form the handle 31a.

The embodiment of FIG. 18 shows the interlabial article 2f, which corresponds to the structure of FIG. 17 but with the top cover layer 39 as well as the bottom of the short coating offset so that the dome in the form of a raised portion 40 in the form of a hill. There is a difference forming (provided for convenience in the vaginal vestibule 41b according to FIG. 12).

Two distal ends in the form of weld joints are joined to form a handle 42 and a liquid-impermeable layer 10a is attached thereon.

19 shows an unfilled interlabial article 2g consisting of two members 39 with branches 39a and 39b, which members are assembled vertically so that the loop 50a and the handle 50b The hill or vaginal vestibule member 40 is formed by forming the vertical members 50, 50a, 50b in the form of a loop by folding one member in two layers.

The individual structure 2h of the absorber 2h is shown in FIG. 20. In this case, the absorbent vertical member 51 is made in one layer in the form of an absorbent pad, and forms a raised part 40 reaching the vaginal vestibule at the top and a handle 51b at the bottom.

21-23 show the interlabial article 2i in the form of a fish, where the portion 59 in the form of a fish trunk forms the main absorber, and the portion 60 in the form of a fin forms additional absorbers and handles. The trunk shaped portion is made like a flat pad 59, wherein a layer of cellulose fiber 73 is disposed at least partially in the form of granules between the cover layer 71 and the backing layer 72. Distal end 61 may have a tail fin shape. Both members 59 and 60 are, for example, blunt, glued together with an adhesive to form a T-shape or welded by ultrasonic welding. The liquid-impermeable coating 10a applied to the bottom surface increases the stability of the bond. In order to enlarge the functional area, the pleat 62 can be caught in the absorber area of the trunk portion portion 59, which also improves flexibility (comfort).

As shown in the side view of FIG. 23, the interlabial article 2i may conform to the anatomical structure of the pelvic flat of the woman or may be preformed accordingly accordingly.

Numerous experiments have been carried out as described below to disclose the advantageous effects of the present invention.

Test method used

Absorbent / absorbent capacity, test method for sanitary napkins

This test method measures the total absorbency of the test object collected from the hygiene article. Two values are measured: absorptive with heavy load and absorptive with no heavy load.

Device and materials:

1) Liquid Absorber (see Figure 9)

2) Plexiglass frame fixed on screen, 100 × 100 mm, height 20 mm

3) Plexiglass ram, 99 × 99 × 25 mm

4) stopwatch

5) large microscope slide

6) Weight, 250 g, floor area 100 × 100 mm

7) tongs

8) Aluminum plate 100 × 65 mm (to fix the sample to prevent it from floating)

9) scale

10) test liquid or amount of blood

The absorbency of a sanitary napkin for use on menstruation is measured as follows:                 

The central part of the sanitary napkin (100 mm long) is weighed and placed in a Plexiglass container with a metal screen underneath. It is then placed in a container with dimensions 200 × 200 × 100 mm. Approximately 2 liters of the physiological liquid model (or positive blood) is then added so that the sample is completely surrounded by the liquid. Wrap with aluminum plate. Wait 10 minutes and pour out the liquid. The sample is taken out with forceps and weighed on a microscope slide. After weighing again, the difference is taken to calculate the absorbent capacity without weight loading.

The sample is then placed back into the vessel and loaded with a 2.5 kg weight with a base area of 100 x 100 mm, again with liquid and waiting 10 minutes. The liquid is then decanted and the sample is weighed again. This value is the absorption capacity under load.

This value is expressed as the absorption of blood or blood substitute per section of the sanitary napkin as specific absorption per gram.

Dynamic Rewet, Test Method

This test method exposes a sanitary napkin to a given amount of test liquid and then measures the amount of liquid released from the surface of the sanitary napkin towards the medium (filter). In use, pressure is dynamically applied from the sides to simulate the pressure exerted by the thighs.

Device and materials:

1) rewetting device with a device capable of applying mechanical pressure on its side (FIG. 10)                 

2) extended hole stencil

3) two clamps

4) Eppendorf pipette, 1 ml

5) positive blood

6) stopwatch and alarm clock

7) Semi-circular fan for rewetting

8) 2.5 kg weight

9) Stack of filter paper [Schleicher & Schull 2040A]

10) Now

Measurement system for area measurement

step:

1) Measure the dry weight of the filter paper stack.

2) Remove the silicone paper from the sanitary napkin and wrap it with a tissue layer.

3) Place the sanitary napkin in the device and place the elongated hole stencil on the sanitary napkin. Using a clamp, both ends of the stencil are attached to the substrate.

Using an Eppendorf pipette, 1 ml of blood is dropped into the elongated hole and simultaneously timed with a stopwatch.

After 15 seconds, press the button to begin pressing (jaw is automatically opened again). Immediately after opening, 1 ml of blood is added again, waiting 15 seconds and compressed. Repeat this procedure until 5 ml of total blood is applied and the specimen is compressed five times. The alarm is then set for 10 minutes.

4) Wait 10 minutes, then remove the clamps and stencils and place the sanitary napkin in a semi-circular pan, which is desirable to avoid deformation.

The filter paper stack is then placed on a sanitary napkin and 2.5 kg weight on top for 15 seconds (semi-circular weight + 500 g weight).

5) After 15 seconds, measure the wet weight of the filter paper stack and rewet area (cm ² ). The difference between the wet and dry weights yields the rewet amount in grams.

Discovery report:

Rewet is given in grams. In addition, the area can be measured by another apparatus (camera). Absorption (pass) time for 1 ml dose accommodation is also provided.

result

The following table (Table 1) summarizes the test results.

In this table, LC200 refers to cellulose fibers mechanically decomposed and cleaned from alpha-cellulose (manufactured by J. Rettenmaier & Sohne GmbH & Co., Germany), and LC 200 HF is such a fiber (particle size 400 μm, Granules prepared from a powder density of 210 g / l ± 15%). PMH is polymethylene urea and SAP represents superabsorbent particles.

In summary, it can therefore be said that the cellulose fibers according to the invention, which may be present at least partially in granular form, have the advantages mentioned in the above detailed description. The accompanying drawings and embodiments do not limit the scope of the embodiments provided herein in any way, but should serve only to illustrate the invention.

 LC200 HF  LC200   2: 1 mixture Granulated cellulose fiber Cellulose fiber Granulated cellulose fiber / cellulose fiber  PMH  SAP Cellulose fibrosis Rising Height (Size of Acrylic Tube, 50mm Height, Inner Diameter 6mm, Perlon Mesh Bottom)  mm   1 minute later     24     12     12   22    0    10   5 minutes later     37     27     27   40    0    15   10 minutes later     43     36     34   47    2    28   20 minutes later     44     43     43   50    2    40 Absorbance g / g   No load   13-16   13-16    13-16 12-18 18-20  13-16   With load    6-8    6-8     6-8  8-12 13-16   6-8 Dynamic rewetting  g   Rewet amount  g  0.01-0.4  0.2-0.6  0.01-0.4 0.02-0.4 0.4-0.9  0.2-0.8

Drawing reference number list

L absorbent article 2, length

l length of center member 12

Width of B absorbent article 2                 

b width of center member 12

H joint

2 Absorbent Goods

3 edge area (FIG. 1)

2a to 2h interlabial absorbent article (FIGS. 11 to 23)

4 liquid-permeable cover layer

4a liquid-permeable first cover layer (FIG. 13)

4a 'liquid-permeable second cover layer (FIG. 13)

6 absorber

8 Secondary storage layer

10 liquid-impermeable backing layer

10a liquid-impermeable coating

12 center member

14 Granules (cellulose fiber) according to the present invention

16 Super Strong Absorber

18 textile material

19 interlabial product (FIG. 11)

19a cover layer, permeable

19b support layer

19c edge area                 

19d coating, impermeable

20 absorbent

22 absorbent

23 connection, mating, seam

24 Liquid-permeable coating of the central member 12 (FIG. 2)

25 liquid-permeable cover layer

26 bottom layer part (FIG. 16)

27 Bottom floor section (FIG. 16)

28 mates, connections

29 mating, connection

30 mates, connections

31 support layer (FIG. 17)

31a handle (FIG. 17)

39 cover layer (FIG. 18)

40 absorber hill

41 Vestibular vestibule (Fig. 17)

41a labia band

41b vaginal vestibular

42 connection, mating (Fig. 18)

Folded, vertical loop insert to form 50 vaginal vestibular absorber 50a and handle 50b (FIG. 19)

50a Vaginal Absorber

50b handle section (50 ends stacked on top of each other)

51 vertical insert, single part, not folded (FIG. 20)

51a Vaginal Absorber

51b handle

59 fish body shaped portion (FIGS. 21-23), pad

60 Badge fins for fish shape and handle formation

61 Terminals to Form Fish Tail Shape

62 wrinkles

71 59 Cover Layers

72 59 support layers

73 layers of cellulose fiber 14

Claims (71)

At least partially granulated, the cellulose fibers 14 present in at least partially granular form are in the form of a mixture of granules and fibers, the mixture containing 20 to 90% by weight granules and 10 to 80% by weight fibers. An absorbent article (2) comprising cellulose fibers (14) present in the form. The absorbent article (2) according to claim 1, wherein said cellulose fibers (14), which are at least partially in granular form, are obtained from wood and / or other plant fibers. The method of claim 1, wherein at least the following additional components A liquid-permeable cover layer 4 facing the wearer's body when wearing the article, A liquid-impermeable backing layer 10 facing away from the wearer's body when wearing the article, An absorbent body 6 arranged between the liquid-permeable cover layer 4 and the liquid-impermeable backing layer 10, wherein the absorber 6 comprises absorbers 20, 22, at least partially The cellulose fibers 14 present in the form of granules are arranged in the absorbent body 6) Absorbent article (2) comprising a. delete The absorbent article according to any one of claims 1 to 3, wherein the granules are free flowing. The absorbent article (2) according to any one of claims 1 to 3, wherein the granules have an average particle diameter of 50 to 3000 mu m. The absorbent article (2) according to claim 6, wherein the granules have an average particle diameter of 400 mu m. The absorbent article (2) according to any one of claims 1 to 3, wherein the granules have an average powder density according to DIN 53,468 of 30 to 600 g / l. The absorbent article (2) according to claim 8, wherein the granules have an average powder density according to DIN 53,468 of 100 to 300 g / l ± 15%. delete The absorbent article (2) according to any one of claims 1 to 3, wherein the average fiber length of the fibers is from 100 to 600 mu m. The absorbent article (2) according to claim 11, wherein the average fiber length of the fibers is 300 mu m. The absorbent article (2) according to any one of claims 1 to 3, wherein the average fiber thickness of the fibers is from 10 to 50 mu m. The absorbent article (2) according to claim 13, wherein the average fiber thickness of the fibers is 20 mu m. The absorbent article (2) according to any one of claims 1 to 3, wherein the fibers used to produce the granules are fine fibers. The absorbent article (2) according to any one of claims 1 to 3, wherein the cellulose fibers (14), which are at least partly in the form of granules, are obtained from α-cellulose. delete The absorbent article (2) according to any one of claims 1 to 3, wherein the mixture is free flowing. delete The absorbent article (2) according to any one of claims 1 to 3, wherein the mixture contains 60 to 70% by weight granules and 30 to 40% by weight fibers. The absorbent article (2) according to any one of claims 1 to 3, wherein the fibers are present on the surface of the granules. The absorbent article (2) according to claim 3, wherein the absorbent material (22) serving as secondary reservoir (8) is arranged on the side facing the wearer's body of the liquid-impermeable layer (10). The material 22 according to claim 22, wherein the material 22 serving as secondary reservoir is a coform material, an airlaid material, a tissue wadding and / or a nonwoven, in particular a spunbond nonwoven or a cotton nonwoven. Absorbent articles (2). 4. An absorbent article (2) according to claim 3, wherein at least one third of the absorbent material (20, 22) in the absorbent body (6) consists of cellulose fibers (14), at least partially present in granular form. 25. The absorbent article (2) of claim 24, wherein at least half of the absorbent material (20, 22) consists of cellulose fibers (14) that are at least partially present in granular form. 26. The absorbent article (2) according to claim 25, wherein at least two thirds of the absorbent material (20, 22) consists of cellulose fibers (14), at least partially present in granular form. 27. An absorbent article (2) according to claim 26, wherein at least 80% of the absorbent material (20, 22) consists of cellulose fibers (14) which are at least partially present in granular form. 28. An absorbent article (2) according to claim 27, wherein the absorbent material (20, 22) consists of cellulose fibers (14) at least partially present in granular form. 4. A fibrous material according to claim 3, wherein the absorbents 20, 22 comprise cellulose fibers 14 at least partially present in granular form, wherein the cellulose fibers 14 are cellulose / polypropylene mixtures and / or coforms. The absorbent article 2 introduced in the matrix of the article. 30. An absorbent article (2) according to claim 29, wherein said absorbent material (20, 22) comprising cellulose fibers (14), at least partly in granular form, is uniformly blended into the fibrous material. 30. An absorbent article (2) according to claim 29, wherein said absorbent material (20, 22) comprising cellulose fibers (14), at least partly in granular form, is introduced between the layers of fibrous material (18). delete 30. An absorbent article (2) according to claim 29, wherein the ratio of absorbent material (20, 22) to fiber material (18) is from 1 to 25% by weight to 99 to 75% by weight. 34. An absorbent article (2) according to claim 33, wherein the ratio of absorbent material (20, 22) to fiber material (18) is from 5 to 20% by weight to 95 to 80% by weight. 35. The absorbent article of claim 34, wherein the ratio of absorbent material (20, 22) to fiber material (18) is from 10 to 15% by weight to 90 to 85% by weight. 30. An absorbent article (2) according to claim 29, wherein the absorbent material (20, 22) comprises a super absorbent material (16). 37. The absorbent article of claim 36, wherein said super absorbent material is polyacrylate. 37. The absorbent article 2 according to claim 36, wherein the cellulose fibers 14 and / or the fibrous material 18 and / or the superabsorbent 16, which are at least partially present in granular form, are arranged in layers. ). 39. An absorbent article (2) according to claim 38, wherein said fibrous material (18) forms a layer between said superabsorbent material (16) and said cellulose fibers (14) that are at least partially in granular form. 40. The article side according to claim 39, wherein said cellulose fibers 14, at least partly in granule form, are arranged on the article side facing the wearer's body and the superabsorbent 16 facing away from the wearer's body. Absorbent article (2) arranged in. 37. The absorbent article of claim 36, wherein said cellulose fibers (14), said fibrous material (18) and said superabsorbent material (16), which are at least partially in granular form, are present in the form of a mixture. The absorbent article (2) according to any one of claims 1 to 3, wherein the cellulose fibers (14), which are at least partly in the form of granules, are coated with a material such as dextrin, which delays liquid absorption. 4. The hydrophobicity according to claim 1, wherein the cellulose fibers 14 at least partially present in granular form are provided with hydrophobicity with a suitable formulation such as Wacker-Silicone Finish WS 60 E. One absorbent article (2). The absorbent article (2) according to any one of claims 1 to 3, wherein the water retention capacity of the cellulose fibers (14), which is present at least partially in the form of granules, is at least 6 g H ₂ O / g. The absorbent article (2) according to any one of claims 1 to 3, wherein the water retention capacity of the cellulose fibers (14), which is present at least partially in the form of granules, is from 8 to 16 g H ₂ O / g. 4. An absorbent article (2) according to claim 3, wherein said absorbent material (20, 22) contains at least one skin protective material. 4. The absorbent body (6) according to claim 3, wherein the absorbent body (6) has at least one central member (12), in which the absorbents (20, 22) are accommodated, preferably the length l of the central member (12) The absorbent article 2, which is less than or equal to the length L and the width b of the central member 12 is less than or equal to the width B of the absorbent article. The absorbent article (2) according to any one of claims 1 to 3, which is a feminine hygiene article. 49. The absorbent article of claim 48, wherein said feminine hygiene article is a sanitary napkin, in particular an ultra-thin sanitary napkin and / or panty liner. The absorbent article (2) according to any one of claims 1 to 3, which is a diaper and / or incontinence pad. 4. An absorbent article (2) according to claim 3, wherein said liquid-permeable layer (4) has a centrally located opening. delete delete delete 4. The absorbent article 2 according to claim 3, wherein the article is an interlabial absorbent 19, 2a, 2b, 2d, 2e, 2f, 2g, 2h, 2i. . 56. A liquid permeable cover layer (19a), opposing liquid-impermeable backing layers (19b, 19d) connected to each other at edge regions (19c), wherein said cover layer (19a) ) And the cavity H formed between the backing layers 19b and 19d is at least partly filled with cellulose fibers 14 which are at least partly in the form of granules (FIG. 11). 57. The absorbent article of claim 56, wherein the backing layer is formed of a carrier layer (19b) having a liquid-impermeable coating (19d). 58. The absorbent article of claim 57 wherein the coating is placed only on the area of the backing layer of the interlabial absorbent article that faces outward and does not come into contact with the mucosa during wear (FIG. 12). The interlabial absorber 2a is formed of two-plied layers 4a, 4a ', wherein the two layers 4a, 4a'. Surrounds the cavity H, which is preferably loosely filled with cellulose fibers 14, which are at least partially present in granular form, wherein the two-ply layer is mushroom-shaped and the layers 4a, 4a '. The distal ends of the absorbent articles (Fig. 13) characterized in that they are connected to each other in (23) in such a way as to form a handle for introducing the interlabial absorbent (2d). 59. The outer layer 4a according to any one of claims 55 to 58, wherein the cavity H at least partially filled with the cellulose fiber 14 at least partly in the form of granules. While enclosing, the absorbent article 2b (FIGS. 14 and 15) characterized by forming a mushroom body. 59. The absorbent article 2d according to any of claims 55 to 58, wherein the back side of the absorbent sheath is formed of two portions 26 and 27, which are connected to each other to form a handle at 28. (FIG. 16). 59. The bearing layer 31 according to any one of claims 55 to 58, wherein the backing layer 31 forms an offset or folded portion 31a facing away from the body in a central portion on its face facing away from the absorbent body, which handles Absorbent article 2e, characterized in that formed as (Fig. 17). 59. The interlabial absorbent article as claimed in any one of claims 55 to 58, having a hill-shaped ridge 40 located centrally on the surface and extending in the longitudinal direction, which can be introduced into the vaginal vestibule. (2f) (FIG. 18). 64. The ridge portion 50a according to claim 63, wherein the ridge portion is formed by a loop portion 50 of liquid-permeable material, which penetrates the cover layer 39 centrally, wherein the rounded portion 50a forms the ridge portion 40. And their ends 50b superimposed on one another extend between the material portions of the backing sheet portion 39a, and the ends of the material portions are bent downward to form a handle (2g) ( 19). 64. The central portion of the cover layer 39 is penetrated by an absorbent pad portion 51 extending in the longitudinal direction of the interlabial absorber, one end 51a forming a raised portion 40. An absorbent article 2h (FIG. 20), characterized in that the opposite ends 51b extend downwards between the material portions of the backing layer 10a which are bent downward and extend in opposite directions to each other. 59. The layer 73 of any one of claims 55-58, wherein the interlabial absorbent body 2i is formed as a flat pad 59, wherein the layer 73 of cellulose fibers 14 is at least partially present in granular form. Arranged between the cover layer 71 and the backing layer 72, the main body of the pad 59 exhibits an elliptical contour, resembling a fish body when viewed from above, and positioned in the area of the pad and having a caudal fin shape. An absorbent article (FIGS. 21-23), characterized in that an attachment portion 61 is attached at one end thereof. 67. The device of claim 66, wherein the pad includes a portion 60 that is drooped down into a media fin shape that imparts a T-shape to the pad when viewed in transverse longitudinal direction with respect to plane XXII-XXII, which introduces interlabial absorbent bodies. Absorbent article, characterized in that it serves as a handle for (Figs. 21 and 22). 68. The absorbent article of claim 67, wherein said downwardly extending portion extends in the direction of the longitudinal axis of the interlabial absorbent body (2i) and / or in a manner limited to the central longitudinal region. 67. The absorbent article as in claim 66, wherein said cover layer (71) is formed such that said pleats (62) extend longitudinally. The absorbent article (2) according to claim 15, wherein the microfibers have an average fiber length of 100 to 600 mu m and an average fiber thickness of 10 to 50 mu m. The absorbent article (2) according to any one of claims 1 to 3, further comprising an absorbent material (20, 22) comprising a super absorbent material (16).

Images